[Bug target/58574] [4.8/4.9 Regression] Wrong code due to s390x machine reorg pass

[krebbel at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58574

--- Comment #7 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Created attachment 30938
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30938&action=edit
Alternate fix - v2

Since tablejump_p is checking for JUMP_P anyway we could move the check even
outside the jump insn check.

I've also changed s390_split_branches to exit early for table jumps.

Untested so far.